Multiple Choice
Centromeres split and sister chromatids are separated from each other only during which phase of mitosis?
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9. Mitosis and Meiosis
Mitosis
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During mitosis in a cell with 2n=8, how many chromosomes are present in each daughter cell after cytokinesis?
A
8
B
16
C
4
D
2
Verified step by step guidance1
Identify the diploid number (2n) of the cell, which is given as 8. This means the cell has 8 chromosomes in total before mitosis begins.
Recall that mitosis is a process of cell division that results in two daughter cells, each genetically identical to the parent cell, maintaining the same chromosome number.
Understand that during mitosis, the chromosomes are duplicated during the S phase of interphase, so the cell temporarily has 16 chromatids, but these are organized into 8 chromosomes.
After mitosis and cytokinesis, the chromatids separate into two nuclei, and the cell divides into two daughter cells, each receiving one copy of each chromosome.
Therefore, each daughter cell will have the same diploid number of chromosomes as the original cell, which is 8 chromosomes.
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